NEET Physics Question - Thermal Physics

Assertion (A): Molar heat capacity of an ideal monoatomic gas at constant volume is a constant at all temperatures.

Reason (R): As the temperature of an monoatomic ideal gas is increased, number of degrees of freedom of gas molecules remains constant.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

For an ideal monoatomic gas, \(C_v = \frac{3}{2}R\) as it only has 3 translational degrees of freedom. This number \(f=3\) remains constant with temperature. Thus, \(C_v\) is constant. Reason (R) correctly explains Assertion (A).

Rankers Physics

Molar Heat Capacity of Monoatomic Gas

Solution:

Leave a Reply Cancel reply